CVE-2019-12669 Cisco IOS and IOS XE Software Change of Authorization Denial of Service Vulnerability

Medium 6.8 Published 25 Sep 2019 Updated 21 Nov 2024

Unauthenticated remote attackers can cause a denial of service on Cisco IOS XE devices by sending malformed RADIUS CoA packets.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2019-12669?

CVE-2019-12669 is a medium-severity denial of service vulnerability in Cisco Ios, published on 25 Sep 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

A vulnerability in the RADIUS Change of Authorization (CoA) code of Cisco TrustSec, a feature within Cisco IOS XE Software, could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. The vulnerability is due to improper handling of a malformed packet. An attacker could exploit this vulnerability by sending a malformed packet to an affected device. A successful exploit could allow the attacker to cause a DoS condition on the affected device.

Weakness: CWE-20

Which versions are affected by CVE-2019-12669?

It affects 1 product.

Products include Cisco Ios.

How do I fix CVE-2019-12669?

No fix has been published for CVE-2019-12669 yet. Limit exposure of the affected software until one is available.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2019-12669 being exploited?

There is no known exploitation of CVE-2019-12669 in the wild and no public exploit code.

All Cisco Ios vulnerabilities

Sources

Also known as GHSA-6588-55q8-wmrc.